/* header_beigin */
header{
    position: fixed;
    top:0;
    z-index:9;
    width: 100%;
    border-bottom: 1.425px solid #FFF;

    background: rgba(255, 255, 255, 0.40);
    
    backdrop-filter: blur(62.32758712768555px);
 }
 .header_white{
    background: none;
    border:none;
}
 .header_blue{
    backdrop-filter: blur(62.32758712768555px);
     border:none;
     background: #1A5AFE;
 }
 

 .header_box{

     height: 70px;
     font-size: 16px;
 font-style: normal;
 font-weight: 400;
 line-height: normal;
 font-family: Source Han Sans CN;
 }
 .logo{
     width:80px;
     vertical-align: middle;
 }
 
 .head_l_nav{
     margin-left:60px;
 }
 
 .head_r{
 width: 430px;
 }
  .nav_list{
     position: relative;
     margin-left:48px;
  }
 .nav_a{
     position: relative;
     display: block;
     font-family: PingFang SC;
     font-size: 16px;
     height: 70px;
     font-style: normal; 
 font-weight: 400;
     line-height: 70px;
     color: rgba(0, 0, 0, 0.85);
     padding:0 3px;
     -webkit-transition: all .25s ease;
     transition: all .25s ease;
 }
 .nav_a::after{
    transform: unset;
    content: "";
    background: none;
    margin: 0;
    width: 0;
    height: 3px;
    position: absolute;
    bottom: 0;
    left: 0;
    background-color: #2B78F6;
    -webkit-transition: width .25s ease;
    transition: width .25s ease;
 }
 .nav_a i{
     margin-left:8px;
 }
 .nav_a:hover{
     color: rgba(0, 0, 0, 0.85);
 }
 .nav_a:hover::after{
    width: 100%;
 }
 .nav_list:first-child{
     margin-left:0;
 }
 .nav_active{
     color: rgba(0, 0, 0, 0.85);
     font-weight: 700;
     font-family: PingFang SC;
  
 }
 .nav_active::after{
    background-color: #2B78F6;
    width: 100%;
    -webkit-transition: width .25s ease;
    transition: width .25s ease;
 }
 .header_blue .nav_a,.header_blue .nav_a:hover,.header_blue .nav_active,.header_white .nav_a,.header_white .nav_a:hover,.header_white .nav_active,.header_blue .head_lang{
     color:#fff
 }
 .header_blue .head_lang svg path{
    fill: #fff;
 }
 .header_blue .nav_a:hover::after,.header_blue .nav_active::after,.header_white .nav_a:hover::after,.header_white .nav_active::after{
    width: 100%;
    background-color: #fff;
    -webkit-transition: width .25s ease;
    transition: width .25s ease;
 }

 /* .nav_a_white{
     color:#fff
 }
 .nav_a_white:hover{
     color:#fff;
     border-bottom: 3px solid #fff;
 }
 .nav_white_active{
     color:#fff;
     border-bottom: 3px solid #fff;
 } */
 
 .head_lang{
    font-size: 20px;
    display: flex;
    align-items: center;
    color:#2B78F6;
    height:50px;
    gap: 3px;
    margin-right: 20px;
 }
 .header_white .head_lang{
    color:#fff;
 }
 .header_white .head_lang svg path{
    fill: #fff;
 }
 .head_r .mdui-menu-cascade{
    width:150px;
 }
 .nav-drop-down{
     display: none;
     width: 870px;
     height: 80px;
     position: absolute;
     overflow: hidden;
     z-index: 8;
     top: 70px;
      left:-100px;
      border: 1.425px solid #FFF;
      background: rgba(255, 255, 255, 0.30);
      backdrop-filter: blur(62.32758712768555px);
      align-items: center;
 
 }
 .nav-drop-cont{
    display: flex;
padding: 32px 20px;
flex-direction: column;
justify-content: center;
align-items: flex-start;
gap: 4px;
align-self: stretch;
flex: 1 0 0;
 }
 .nav-drop-cont:hover{
    background: #fff;
 }
 .nav-drop-cont .nav_lista{
    display: flex;
align-items: center;
gap: 12px;
color: #253554;
font-family: PingFang SC;
font-size: 16px;
 }
 .nav-drop-cont p{
    color: #9FA6B1;
font-family: PingFang SC;
font-size: 12px;
font-style: normal;
font-weight: 400;
line-height: 20px;
 }
 .nav_list:hover .nav-drop-down{
    display: flex;

 }
 .nav_list:hover .nav_a{
    font-weight: 700;
 }
 .head_r{
     font-size: 16px;
 font-style: normal;
 font-weight: 400;
 line-height: normal;
 }
 .nav_righta{
    font-family: PingFang SC;
     margin-right:32px;
 
     color: #1A5AFE;
 }
 .nav_reg{
    display: block;
     font-family: PingFang SC;
     font-weight: 600;
     color: #fff;
     line-height: 70px;
    height: 100%;
    padding:0 32px;
 
     background: #1A5AFE;
 }
 
 .header_blue .nav_reg, .header_white .nav_reg{
    background: #fff;
    color:#1A5AFE;
 }
 .header_blue .nav_righta, .header_white .nav_righta{
     color: #fff;
 }